Assume that respondents aged 65 or older are only one-third as likely to be in an Internet sample as their actual incidence in the population. Using propensity scoring, their responses would be:
A)excluded from the sample to avoid any potential bias.
B)included as is (only once) to keep the data truly representative.
C)counted three times in the sample.
D)included selectively (about one-third of the time) in the sample.
E)included alternatively.

Question

Quizplus · Accepted Answer

Propensity scoring is used to adjust for sampling bias by weighting responses to reflect their true incidence in the population. Since respondents aged 65 or older are underrepresented, their responses would be counted three times to correct for this underrepresentation.

Assume That Respondents Aged 65 or Older Are Only One-Third